1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* RSD demuxer
* Copyright (c) 2013 James Almer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavcodec/bytestream.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "avio.h"
#include "internal.h"
static const AVCodecTag rsd_tags[] = {
{ AV_CODEC_ID_ADPCM_PSX, MKTAG('V','A','G',' ') },
{ AV_CODEC_ID_ADPCM_THP_LE, MKTAG('G','A','D','P') },
{ AV_CODEC_ID_ADPCM_THP, MKTAG('W','A','D','P') },
{ AV_CODEC_ID_ADPCM_IMA_RAD, MKTAG('R','A','D','P') },
{ AV_CODEC_ID_ADPCM_IMA_WAV, MKTAG('X','A','D','P') },
{ AV_CODEC_ID_PCM_S16BE, MKTAG('P','C','M','B') },
{ AV_CODEC_ID_PCM_S16LE, MKTAG('P','C','M',' ') },
{ AV_CODEC_ID_XMA2, MKTAG('X','M','A',' ') },
{ AV_CODEC_ID_NONE, 0 },
};
static const uint32_t rsd_unsupported_tags[] = {
MKTAG('O','G','G',' '),
};
static int rsd_probe(const AVProbeData *p)
{
if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
return 0;
if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
return AVPROBE_SCORE_MAX / 8;
if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16))
return AVPROBE_SCORE_MAX / 8;
return AVPROBE_SCORE_MAX;
}
static int rsd_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
int i, ret, version, start = 0x800;
AVCodecParameters *par;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(pb, 3); // "RSD"
version = avio_r8(pb) - '0';
par = st->codecpar;
par->codec_type = AVMEDIA_TYPE_AUDIO;
par->codec_tag = avio_rl32(pb);
par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
if (!par->codec_id) {
const char *tag_buf = av_fourcc2str(par->codec_tag);
for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
if (par->codec_tag == rsd_unsupported_tags[i]) {
avpriv_request_sample(s, "Codec tag: %s", tag_buf);
return AVERROR_PATCHWELCOME;
}
}
av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
return AVERROR_INVALIDDATA;
}
par->channels = avio_rl32(pb);
if (par->channels <= 0 || par->channels > INT_MAX / 36) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->channels);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, 4); // Bit depth
par->sample_rate = avio_rl32(pb);
if (!par->sample_rate)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4); // Unknown
switch (par->codec_id) {
case AV_CODEC_ID_XMA2:
par->block_align = 2048;
if ((ret = ff_alloc_extradata(par, 34)) < 0)
return ret;
memset(par->extradata, 0, 34);
break;
case AV_CODEC_ID_ADPCM_PSX:
par->block_align = 16 * par->channels;
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_RAD:
par->block_align = 20 * par->channels;
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (version == 2)
start = avio_rl32(pb);
par->bits_per_coded_sample = 4;
par->block_align = 36 * par->channels;
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP_LE:
/* RSD3GADP is mono, so only alloc enough memory
to store the coeff table for a single channel. */
start = avio_rl32(pb);
if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
return ret;
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP:
par->block_align = 8 * par->channels;
avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)
return ret;
for (i = 0; i < par->channels; i++) {
avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
avio_skip(s->pb, 8);
}
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = (avio_size(pb) - start) / (8 * par->channels) * 14;
break;
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16BE:
if (version != 4)
start = avio_rl32(pb);
if (pb->seekable & AVIO_SEEKABLE_NORMAL)
st->duration = (avio_size(pb) - start) / 2 / par->channels;
break;
}
avio_skip(pb, start - avio_tell(pb));
if (par->codec_id == AV_CODEC_ID_XMA2) {
avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
st->duration = avio_rb32(pb);
}
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
return 0;
}
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
{
AVCodecParameters *par = s->streams[0]->codecpar;
int ret, size = 1024;
int64_t pos;
if (avio_feof(s->pb))
return AVERROR_EOF;
pos = avio_tell(s->pb);
if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
par->codec_id == AV_CODEC_ID_ADPCM_PSX ||
par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
par->codec_id == AV_CODEC_ID_XMA2) {
ret = av_get_packet(s->pb, pkt, par->block_align);
} else if (par->codec_tag == MKTAG('W','A','D','P') &&
par->channels > 1) {
int i, ch;
ret = av_new_packet(pkt, par->block_align);
if (ret < 0)
return ret;
for (i = 0; i < 4; i++) {
for (ch = 0; ch < par->channels; ch++) {
pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
}
}
ret = 0;
} else {
ret = av_get_packet(s->pb, pkt, size);
}
if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
pkt->duration = (pkt->data[0] >> 2) * 512;
pkt->pos = pos;
pkt->stream_index = 0;
return ret;
}
AVInputFormat ff_rsd_demuxer = {
.name = "rsd",
.long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
.read_probe = rsd_probe,
.read_header = rsd_read_header,
.read_packet = rsd_read_packet,
.extensions = "rsd",
.codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
.flags = AVFMT_GENERIC_INDEX,
};
|
